Troubleshooting iSTAR Ultra G1 Controllers After Converting from TLS 1.3 to TLS 1.2

Article ID: 000038524 Date Published: 20/03/2026 Warning – Level 2 Document – Do Not Distribute  Overview After converting an Access Control cluster from Encrypted TLS 1.3 support to TLS 1.2, iSTAR Ultra G1 controllers may fail to come online. This issue is caused by an incorrect internal controller flag that is not automatically updated during the TLS downgrade process. This… Continue reading Troubleshooting iSTAR Ultra G1 Controllers After Converting from TLS 1.3 to TLS 1.2

How To Enable SQL Enhanced Protection For Authentication (EPA) with C•CURE

Article ID: 000038476 Published: 20/03/2026 Background Extended Protection for Authentication (EPA) is a SQL Server security feature that can be configured as Off, Allowed, or Required. When EPA is required, C•CURE 9000 must use SQL connection strings that support trusted and encrypted communication. If these values are missing, the C•CURE Application Server may fail to… Continue reading How To Enable SQL Enhanced Protection For Authentication (EPA) with C•CURE

Unable to create clearances using the converted doors with expiring clearance per person feature selected

Warning – Level 2 Document – Do Not Distribute  Article ID: SWH-KB-00004250 Symptom After using the CcureProToSEConvertUtility tool to convert iSTAR Pro Controllers to iSTAR ULTRA Controllers, clearances with the option “Set expiring clearance per person” cannot be created for the converted doors. Version C•CURE 2.6 Cause According to SPAR 518560, the CcureProToSEConvertUtility tool does… Continue reading Unable to create clearances using the converted doors with expiring clearance per person feature selected

C•CURE 9000: GO Reader Driver Application Crash

Warning – Level 2 Document – Do Not Distribute  Article ID: SWH-KB-000038536 Product GO Reader 5127CKMINI Configuration Tool Coppernic GO Device Applies To Environments using GO readers Systems running the GO Reader Driver Application Devices managed via Coppernic App Store Issue Summary During the initial review of two GO reader devices, configuration inconsistencies were identified that caused application… Continue reading C•CURE 9000: GO Reader Driver Application Crash

Replacing an Assa Abloy lock using the DSR Solution

Article ID: SWH-KB-000038523 Purpose To safely replace a faulty ASSA lock with a new unit while preserving credentials and ensuring correct synchronization between DSR and C•CURE. Scope ASSA wireless locks (this procedure also works for POE locks) Systems using DSR and C•CURE Lock replacement scenarios (hardware failure) Important Notes This is not a direct configuration takeover. The new lock must be treated as… Continue reading Replacing an Assa Abloy lock using the DSR Solution